First experience at the gym

I'm a virgin, and 22. I had just finished working out at the gym and I went to shower, I left the curtain open a crack so I could make sure nobody took my towel (that has happened before) and some guy walked by and he sort of just stood there, I thought he was waiting to shower so I rushed a bit, I opened the curtain to grab my towel and said something along the lines of "Hold on", and then before I could start drying off he walked into the shower and grabbed my penis and started jerking me, basically on instinct I grabbed his penis and started jerking it too, I asked him how old he was and he said "no hablo ingles" and he started kissing me all over, with one hand he reached around and fingered me, with the other he jerked me off, I jerked him off too, he finished first and then started fingering me more, until I came too. Then he gave me a smile and left. So does anyone else have any advice on how to make that happen again?